On Friday, it was revealed that the 47-year-old's brother Daniel Dion is dying of the same terrible disease. The artist's sister, Claudette, told The Journal of Montreal that their sibling is on his deathbed, saying:

"It's very painful. It's a matter of days or hours."

She said that Daniel is suffering from three different types of cancer, explaining:

"It looks a lot like René, he had cancer of the throat, tongue and brain. Our family is very experienced."

Claudette added that their 89-year-old mom, Thérèse, rushed to Montreal to be by her son's side during this trying time, adding:

"We are with Daniel, day and night. He is 59 years old, very young to be the end of life."

We can't even begin to imagine what the songstress is going through right now. Our hearts are with her and everyone affected by this terrible tragedy.